John w



(No Model.)

J. W. HYATT.

E WATER CLEANER FOR BOILERS. N0. 354,864.

M ATTORNEY Patented Dec. 21, 1886.

Farce.

PATENT- JOHN w. HYATT, or NEWARK, NEW JERSEY.

WATER-CLEANER FOR BOILERS.

SPECIFICATION forming part of Letters Patent No. 354,864; dated December 21, 1886.

Application filed September 7, 1885. Serial No. 176,378. (No model.)

To all whom, it may concern.-

Be it known that I, JOHN W. HYATT, a citizen of the United States, and a residgnt of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improved Water-Cleaners for Boilers, of which the following is a specification.

My invention relates to an improved watercleaner for boilers.

It is a well-known fact that after the water in a boilerbecomes heated impurities therein are set free-such, for instance, as sulphates and carbonates of lime and magnesia-and by constant boiling are concentrated and become crystalized and adhere to the interior of the boiler, forming incrustations therein and ren= deringi-t unfit-for use. I am aware that in i order to overcome this difficulty devices have y the purpose of feeding the boiler, for circulat-' ing its contents through the filter, or for cirbeen constructed whereby the water has been caused to pass through a filter, both previous and subsequent to its entrance into the boiler, for the purpose of extracting the impurities contained therein, the circulation being produced by a steam-pump connected with the filter and with the waterspace within the boiler. The action of the pump in such case serves to circulate the boiler-fluid continuculating the boiler-fluid through the filter simultaneously with a supply of feed water when it is desired to carry on the feeding operation without interruption.

My invention will be understood by reference to the accompanying drawing, in which A represents a steam-boiler of any construction and dimensions, and B a filter located in any suitable place and communicating with the boiler by means of the pipe 0, leading from the lower end of said filter to the forward end of the boiler. To the inlet of the filter is se cured one end of the pipe E, the opposite end ofwhich is connected with the pump D, adapted to receive the feed-waterfrom the supply-pipe Fand force it through the filterinto the boiler. In the supply-pipe F, leading to the pump, is located a valve, a, and between said valve and pump is secured a pipe, G, leading into the rear end of the boiler and provided with a valve, 1). I p

The filter may be of any desired constructiou; but I preferably use a filter constructed as shown and described in Letters Patent granted to me on the 6th day of March, 1883, r

and numbered 273,542, which filter is so constructed that the filtering-bed may be easily and readily cleansed of the impurities deposited by the water passing through it.

After the boiler has been filled the valve a is closed, cutting off the feed-water, and the valve 1) opened, and by means of the pump D the water is forced through the filter, through the boiler, back into the filter, and so on, the latter extracting the impurit-ies'from the water before accumulating sufficiently'to adhere to the boiler, and thus obviating all danger of any incrustation forming therein.

In many cases it is considered objectionable to supply the evaporation of the boilerby an intermittent feed, and in such cases the pump in my construction may be used to supply a continuous feed and to simultaneously circulate the boiler-fluid through the filter. -When thus operated the valves or and b are both partially opened and their apertures regulated to secure a suitable supply of feed-water through the former valve, while the pump is run at a suitable speed to also draw some of the boilerfluid through the valve 6. The feed-water and theboiler-fiuid thus become mingled in the pump and are propelled together through the filter and discharged after purification together into the boiler.

It will be seen from the above description that by my device the pump used for circulating the boiler-fluid through the filter may also be employed to feed the boiler, and a single pumping device may thus be made to perform all the three separate functions which have been described above. As various methods have been used for causing the water to take a circuitous passage 5 through a filter and boiler, Iwould have it understood that I make no broad claim to such but What Iclaim as my invention, and desire to secureby Letters Patent, is- [0 The combination, with the steam-boiler A and the filter B, having its outlet connected with the boiler, of the pump D, having its outlet E connected with the filter B and its inlet connected by the separate pipes F and r 5 G, respectively, with a feed-Water supply and the water-space in the boiler, the pipes F and JOHN W. HYATT.

Vitnesses:

GEORGE CooK, ARTHUR L. HENTHORN. 

